Home / 99,370.31-137,130.92-56,929.01

Finding the Fourth Proportional to 99,370.31, 137,130.92 and 56,929.01

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Solution

The fourth proportional to 99,370.31, 137,130.92 and 56,929.01 is: 78,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,370.31 : 137,130.92 = 56,929.01 : x
  2. Step 2: Convert to fraction form
    99,370.31/137,130.92 = 56,929.01/x
  3. Step 3: Cross multiply
    99,370.31x = 137,130.92 × 56,929.01
  4. Step 4: Simplify right side
    99,370.31x = 7,806,726,830.33
  5. Step 5: Solve for x
    x = 7,806,726,830.33/99,370.31
  6. Step 6: Final answer
    x = 78,561.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.